diff --git a/lib/Makefile b/lib/Makefile
index cc2357973de..5023ddfe437 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -12,7 +12,7 @@ SUBDIR=csu/${MACHINE}
 # XXX MISSING:		libmp libplot
 SUBDIR+=	libc libcompat libcrypt libcurses libedit libf2c libforms \
 	libkvm libmd libmytinfo libncurses libresolv librpcsvc libskey \
-	libtelnet libtermcap libutil liby
+	libss libtelnet libtermcap libutil liby
 
 .if !defined(WANT_MSUN)
 SUBDIR+= libm